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/* Copyright (C) 1991,1994-1996,1998,2001,2002,2005,2009
Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <assert.h>
#include <atomic.h>
#include <libintl.h>
#include <stdio.h>
#include <stdlib.h>
#include <sysdep.h>
#include <unistd.h>
extern const char *__progname;
#ifdef USE_IN_LIBIO
# include <wchar.h>
# include <libio/iolibio.h>
# define fflush(s) INTUSE(_IO_fflush) (s)
#endif
/* This function, when passed a string containing an asserted
expression, a filename, and a line number, prints a message
on the standard error stream of the form:
a.c:10: foobar: Assertion `a == b' failed.
It then aborts program execution via a call to `abort'. */
#ifdef FATAL_PREPARE_INCLUDE
# include FATAL_PREPARE_INCLUDE
#endif
#undef __assert_fail
void
__assert_fail (const char *assertion, const char *file, unsigned int line,
const char *function)
{
char *buf;
#ifdef FATAL_PREPARE
FATAL_PREPARE;
#endif
if (__asprintf (&buf, _("%s%s%s:%u: %s%sAssertion `%s' failed.\n"),
__progname, __progname[0] ? ": " : "",
file, line,
function ? function : "", function ? ": " : "",
assertion) >= 0)
{
/* Print the message. */
(void) __fxprintf (NULL, "%s", buf);
(void) fflush (stderr);
/* We have to free the old buffer since the application might
catch the SIGABRT signal. */
char *old = atomic_exchange_acq (&__abort_msg, buf);
free (old);
}
else
{
/* At least print a minimal message. */
static const char errstr[] = "Unexpected error.\n";
__libc_write (STDERR_FILENO, errstr, sizeof (errstr) - 1);
}
abort ();
}
hidden_def(__assert_fail)
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